No. You don't need own textures. My CW Carbon Collection node comes with 12 prepared carbon like textures and textures for scratches. You can blend between all textures in the collection.

The CW Carbon Collection is based on specially prepared textures images (16 bit TIF files and PNGs). The global parameters are procedural.

If you are familiar with Blenders node system, so I invite you to examine my Matrial group. I've created a more or less complex node system to create the Carbon effect. Actually the solution is not very complex. The most interesting are the special textures I use. You must understand how RGBA textures work to create own Carbon patterns.

The CW TilingTool is the actual reason why I've created this material tree. I've seeked for a quick solution to generate a simple pattern tiling system. The CW TilingTool fulfills the basic functionality to create own tiled patterns. It controls the UV coordinates of the Carbon material.

Of course you can use the tool for your own materials. I would appreciate this.